Polishing apparatus



June 24, 1952 ZE|LER 2,601,581

POLISHING APPARATUS Filed Feb. 15, 1950 EE F IIIIEIP gum-,1

' INVENTOR. u Hank Zeiler.

Patented June 24, 1952 UNITED STATES ?ATENT I OFFICE H POLISHING APPARATUS Frank I. Zeiler, Brooklyn, N. Y. Application February 15, 1950, Serial No. 144,243

2 Claims. 1

I have invented an improvement in polishing apparatus and particularly apparatus for holding and feeding hollowbodies such as tubes, cylinders, cups and other round objects, in engagement with a member actuated to burnish the exterior surfaces of such objects.

An object of the invention is to provide a machine of simple and eflicient design, capable of holding an article to be treated in position to be engaged by a polishing member and keeping said article in constant operative relation therewith till the task is finished.

A further object is to provide a machine by which the object to be polished can be easily fed or adjusted during operation to bring all parts of the surface thereof into engagement with the polishing member, so that the entire surface can be finished with a completely uniform effect.

Another object is to provide polishing apparatus mounted so that it easily can be shifted to move the object into and out of operative position relative to said member, as may be required.

The drawings show a preferred embodiment of my invention, but other forms may of course be employed, varying in minor details, but without material alteration in the general plan. On the drawings:

Figure 1 is a front view of apparatus according to this invention.

Figure 2 is an end elevation thereof; and

Figure 3 shows a detail.

The apparatus comprises a framework made up of standards or upright posts I at the sides and connected at the upper ends by a top bar '2 and lower down by a cross piece 3 and a diagonal brace 4. The electric operating motor 5 is supported on the cross piece 3. The Work shaft 6 is mounted in bearings l secured at the upper part of the framework, and the shaft 5 is connected to the shaft 8 of the motor by chain or other gearing indicated at 9. The one end of the shaft projecting beyond the frame carries a chuck Hi. This chuck can be of any standard design to engage and grip the inside of a hollow body indicated at H, tobe secured on. the shaft 5 and ground or burnished.

The shaft is of suitable length and can be shifted longitudinally so as to feed the work II into position for polishing over its whole surface, by a lever l2 secured to a pivot I3 on the casing of the motor 5. This bar or lever extends upward, and the shaft 6 has rigid collars l4 spaced apart thereon. On the lever B is a longitudinal strip l5 affixed thereto, and the lever is bent away from the strip, making a space If Whereir the collars M are received and housed. Betweer the collars is a ring ll having diametricalh opposite studs l8 which pass through slot: [9 in the lever l2 and strip l5 and have Washers and nuts on their ends engaging the outer faces of the lever I2 and strip l5. A1 the upper end of the bar I2 is a handle 2! sc that it can readily be manipulated. On the frame is a switch 22 for the motor, and a cable 23 to supply operating current. In practice the motor turns the shaft 6, and the work II is held against a rotatable polishing wheel 24 of any suitable material. The shaft 6 is shifted longitudinally by the lever I2 little by little till the whole surface of the work I! has been finished.

The uprights I of the frame have feet at their lower ends comprising angle bars 25 and 26. The feet are pivo-tally attached to the bottom ends of the uprights l by bolts 21. One bar 25 is longer and above it is another horizontal angle bar 28. Secured to the bottom flange of the bar 26 is a rigid plate 29 having upright studs 33 which pass through holes in the bar 28 and are made fast thereto by nuts 3!. The bolt 21 attaches the adjacent upright to the foot containing the bars 26 and 28, and the bar 28 has a stop projection 32 for the adjacent upright I. The top of the framework has a handle 33.

The motor casing contains not only the motor parts but also gearing for connection to the chain gearing 9, so that the motor will run at the proper speed.

The motor causes the bar 6 and Work to revolve, and the shaft and work are fed forward by the lever I2. By means of the handle 33 the entire apparatus can be tilted to move the work towards and from the member 24, because the posts swing about the pivot bolts 21 at their lower ends. The polishing can thus be readily controlled and effectively performed. By reason of the stop 32, the tilting of the apparatus is limited in actual operation and the apparatus will not topple over when not in use.

The gear 34 driven by the motor has a key projection in its aperture to engage a key way 35 in the shaft 6, to rotate the latter.

Having described my invention, what I believe to be new is:

1. Polishing apparatus comprising a framework having an upright post at each side, a shaft, bearings on the framework adjacent the tops of said upright posts for slidably and rotatably mounting said shaft, a motor on the frameork connected to operate'the shaft, a cross- .ece between said uprights supporting said 101301, a lever pivoted adjacent the motor and igaging the shaft for imparting longitudinal lovement thereto, a cross bar to which an upght post at one side of the framework is ivotally connected at the bottom, a second cross ar to which the lower end of the upright post t the opposite side is pivotally connected, a mini cross bar abovethe second cross bar and xed thereto, a plate rigidly secured to the econd cross bar, fixer studs on the plate rigidly onnected to the third cross bar, and a stop on he third cross bar for the last namedrupright. 2. Polishing apparatus comprising a framework having an upright post at each side, a haft, bearings on the framework adjacent the ops of said upright posts for slidably and rotatbiy mounting said shaft, a motor on the framework connected to operate the shaft, a cross- 11608 between said uprights supporting said notor, a lever pivoted adjacent the motor'and engaging the shaft for imparting-longitudinal novement thereto, a cross bar to which an up- -ight post at one side of the framework is aivotally connected at the bottom, a second cross bar to which the lower end of the upright post at the opposite side is pivotally connected, a third cross bar above thesecond cross bar and rigidly connected thereto and a stop on the third cross bar for the last-named upright.

FRANK J. ZEILER.

REFERENCES CITED The followingreferences are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 321,192 Connell June 30, 1885 676,812 Beugler June 18, 1901 946,616 Pembroke Jan. 18, 1910 1,211,776 Spears Jan. 9, 1917 1,239,210 Nesbitt Sept. 4, 1917 1,789,218 Crane Jan. 13, 1931 1,963,459 Beck, ,--r June.19, 1934 2,203,003 Weber June 4, 19 40 FOREIGN PATENTS- Number Country Date 899,278 France Aug. 7, .1944 

